Spring compressor



May 31, 1927.

2 Sheets-$heet 1 Filed May 17, 1926 HVVENTOR ATTORNEY m INVENIOR.

2 Sheets-Sheet 2 D. C. FEATHER SPRING COMPRESSOR Filed May 17, 1926Patented May 31, 1927.

DAVID CHARLES FEATHER, on

Application fiied May 17,

It is an provide a tool of the above described type, which ininterchangeable and re-' connection with movable aws, has a simplemechanism to lock the 32.111611) their operative relation to thelever-members of the toolswithout bolts, screws or other similar Anotherobject of the invention is to lock and unlock the jaws'by simpleadjustment of a ratchet-bar provided in connection with thelever-members of the tool for lock-.

ing the latter against retrograde motion when closed together for thecompression of a spring or other object engaged by the of the tool inits open position;

along the ;l1I1e 22,

jaws. A further object resides in construct ing the locking device sothat it is readily released to return the tool to its open condition andstill other objects reside in features of. construction and a novelarrangement of parts as are fully set forth inthe following detaileddescription of the invention.

An embodiment of the invention has been illustrated in the accompanyingdrawings in the several views of which like, parts are similarlydesignated and in which,

Figure 1 representsa sectional elevation Figure 2, a section Figure 1,drawn to an Figure 3, a similar line 33 Figure 1;

Figure 4, a fragmentary top-view7of one of the jaws of the tool lookingin the direction of thearrow A in Figure 1;

Figure 5, an enlarged perspectivev View of one of the removablejaw-members of the tool; I

enlarged scale Figure 6, a fragmentary sectional view of the toolshowing its Jews in closed pos1- tion;

Figure 1, a similar view of the tool equipped with crossed aws ofdifferent construction which are moved apart when the lever handlesofthe tool are closed together Flgure 8, a fragmentary elevation of theQ showing its tool shown in Figures 1 and 6 a valve of application forthe removal of an internal combustion engine; and,

DENVER,

the pressure of their springs, and comfastening means.

channel-section and v 16 whic section taken on the bifurcated at one endooLoRaDo, ASSIGN-OR o T yZEEATI-IER MOTOR APPLIANCE COMPANY, or DENVER,OOLGRADQ, A oonronarron or com- RADO. V p r I SPRING COMPRESSOR.

@ 26. Serial No. 169,663.

s Figure 10, a fragmentary elevation of one of the lever-members ofjthe'tool with- I out the jaw, looking in the direction'of the' arrow B inFigure 6. Y V

Referring further to the drawings, the tool comprises two crossedlevers5 pivoted together as at 6, to'provide jaw-arms 8. "The levers are ofchannel-section, one passing. through slot of the other, and thejaw-arm'shave at their extremities outwardly projecting lugs 9, for

their pivotal connection in notches 1010f 'slide-pieces 12whichcooperate with links 13 r for the support and connection of thejaws of the tool. Thelinks above referred to are of pivoted at theirrear extremities to the handles'ofgthe levers by screw-pins 14. Theiropposite are provided with inturned flanges 15 to form guide ways forthe sliderpieces on the respectiv'ejawl-arms. I

The slide-pieces which are likewise of channel-section have parallelside-flanges. h fit slidably in the I guide ways of the links. Thenotcheslt) cooperating with the lugs'of the'jaw-arms for the pivotalconnection or the parts, are formedat the forhandles ,7 and end-portionsward ends of the flanges 16 and the body 7 portions of the 'slide-p ecesengaging with v the inner surfaces ofthe links, have central slots 17which terminate in enlargements 18 at'the forward end of the pieces andwhich register with transverse, spectiye links, corresponding in sizewith the enlargements.

The jaw-members of of a flanged blade 20 of channel-section to straddlea valve stem or other-similar part of an engine to which the tool isapplied, and having atits opposite end, a headed jbutton2l bent at rightangles to enter and slide-pieces on the. jaw-arms of the levers. Theflanges 22 of the jaw-members 'h'aveinwardly projecting bosses 23 whichby engagement 7 in correspondingly, formed notches 24 at the forwardends of the links, determine the position of the jaw-members withrelation thereto and cooperate with the headed buttons to hold themembers against 1 relative displacement In the. operative the tool eachconsists slots 19 in the rethe-slots of the links fotone of the links,25, which loosely pro ects through 2' t h *b'uttonsextend looselythrough I locked in connection with the r they can the'hea'dsot thebuttons engage the slid of their slots.- It are thus firmly links andthat be detached only after the enlargements of the slots in theslide-pieces have pieces at opposite sides will be observed t at the awsbeen brought in register with the corresponding transverse slotsoit thethe passage of the heads on the buttons or" links to permit of the jaws.P-ivoted on one of the lever members, preferably by means of the pivotpin is a curved locking bar a longitudinal slot 26 of the other lever.The lock ing bar has at its inner curved edge, a series of ratchet teeththe slottedlever at the slot through which the bar ratchet bar engagingthe edges of the slot movement of the V is in its normal position and HLL " A' coiled spr1ng28 connecting tion in which I AsLpring 32 27adapted to engage with forward end ofthe extends, to lock the two'levers in their adjusted positions.

the bar with the other lever at a rearward point thereof tends tomaintain the bar in its normal posiit engages'at' the rearward end orthe slot26 as indicated in Figure 6.

' Across pin 29 at the free end of the in notched seats in 26 limits theopening lever handles when the bar a heel 31 at the opposite end of thebar provides a thumb piece for the movement of the bar from its nfirmalposition toward the opposite end of t e i 2 spring 28. l V I V coiledaround the pivot of ithe levers "7 in engagement with the'latter',

'functionsto return the levers to their normal open position, after theyhave been, closed together by pressure upon their handles in theoperation of the tool.

When the tool is in its normal open position, the cross pin attheblocking bar, rests in the notches of the slot 26 and the enlargement ofthe slots in the slide-pieces'12 are out oi alinement with the Itransverse slots 19 in thelinks l3. Thejaws 20 are thus locked in"rigidconnection'with f the links by 23 in thenotches 2st at the ends ofthe links and by, the engagement of 7 their headed the engagement oftheir bosses buttons at'opposite sides of the slots 12 of V theslidepie'ces.

' lever arms In order to Compress an object such as the V valve-sprin s34 shown in Figure 8, the are pressed together with the result that thelocking bar isreleased from the notches 30. Atter the spring has beencompressed to the cesired extent by the engagement ot the jaws atopposite ends therethe alined V obviously holds the" bar turning theirslot agalnst the resistance of the free end of the jaws and tion s,particularly with reference 'moved about its pivot by pressure on theheel '3l to cause its ratchet teeth 27 to engage he spring 32 in itsadjusted Lpo'sibe removed with the valve-spring held firmly between itswith the end of the slot 26. I

tion 'so that the tool may jaws. spring, it is dle 7 or the spring 28will compel the ratchet bar to disengage the forward end of the slot andreturnto its original position at the opposite end of the same. 7

The levers of the tool'are now 'tree to spread apart until theirmovement is arrested by the return of the cross pin 29 at the end of theratchet bar the slot To subsequently: release the valvebut necessary topress the han the levers are pressed together to'releasethe cross pin 29from; the notches and the lever tool slightly together when the in'the;seats-3O of 7 To detach the jaw-members 20,

arm is then'moved forwardly to cause the cross-pin to engage with thesurface or the lever arm in which the slot126 is formed, at

opposite sides o'l Figure 1. The'spring 32 again holdsthe bar in itsadjusted position in which it engages the forward end of the slot and inthis position of the tool, thelevers are'broughttogether adistancesuiiicient to move the transverse slots of the links to register withthe corresponding enlargements of the slots in the slide pieces. Thebuttons at the ends of the jaws are now free to pass through thealin'edslots and the jaws may be removed by bosses in the notches at theends of the links until the buttons are free. It is obvious thatthe-jaws may be replaced in a similar manner. Jaws of ditl'erentconstruction maybe attached to the levers or the tool by the same means,as indicated in crossed bypro ecting a shank 37' on one through a slotof the other. The'tool in this form will separate its jaws byapressureexerted on its handles for the compression of a spring by engagementwitha relatively stationary abutment. v i

The llfillCllBS or the tool are slightly curved in one direction'asshown in Figure 1 and this taken together with the fact that the 36 areinterchangeable either with, each other or with jaws of diiiei'ent form;adapts the tool for usetor the. comdiiterent condi to the arrangementsof parts found pression of springs under many varying [in enginesofdilierent makes and types.

I It will be observedthat th'e j aws are held in place without bolts,screws or other similar'tastening. means, thatithey may beinstantlyremoved or replaced by the simple expedient of a slightpressure upon the handles of the tool and adjustment of the locking barand that the latter performs in the slot as illustrated in i -Figure 7of the drawings, showing two aws '35and 36 addition to this distinctivefunction, the

opening movementof the levers and of lockfunctions of determining theextent of] the ing the levers in any of a' plurality of Closedpositions.

Incase, iIlthe use of crossedjaws of the character shown inFigure 7, itis inconvenientto bring the buttons on both oi' them in register withthe slots of the links and slide-pieces, the head oi the jaws may beeliminated and the I v prising crossed levers, a

fastened in place by shown at 88. V

Having thus described my invention what I-claim and desire to secure byLetters Patent is: I

11[ A tool of. the character described comresist their operativepiece-on an arm. of one "of the ,levers and [having a slot endingm awider opening,a

link pivoted on the other levera'nd having a slot alined with the otherslot, a aw-member on the link, havinga headed button ex-f tendingthrough the slot's,-a'n'd a locking device adapted to hold the levers.in an .adjusted position in which the slot of the link registers withthe opening of the slide-piece to provide a passage for-the head of thebutton.

2. A tool of the character described C0111- prising crossed levers, aspring to yieldingly resist their operative movement, a slidepiece on anarm of one of the levers and having a slot ending in a wider opening, a

link pivoted on the other lever and having a slot alined with the otherslot, a jaw-member interlocked with the link at an end thereof andhaving a headed button extending through the-slots, and a locking deviceadapted to hold the levers in an adjusted position in which the slot'ofthe link registers with the opening of the slide-piece to provide apassage for the head of the button.

3. A tool of the character described comprising crossed levers, a springto yieldingly resist their operative movement, a slide-piece 4. A toolof the character described coma spring to yieldingly prising, crossedlevers, resist their 0 erative movement, a. slide-piece on an arm of oneof thelevers and having a slot ending in a wider opening, a link pivotedon the other lever, provided with a of the button of one means of aset-screw spring to yieldinglyi' movement, a" slide- I g of a pluralityof predetermined relative to provide provide a passage'for the headguidewav for theslidefpieceand having a i slot alined with the otherslot, a jaw-member on the. link, having a headed button exvice adaptedto holdthe levers in "an; ad-

justedposition in which the slot oi the'link 'tendingthrough thejslots,and alo c king dc v I registers with the opening of the slideip'ieceprovide apassage for-the head of the button. r a

tool .ofthe character described com-' prising crossed levers, a springtoyieldingly resist their. operative movement, a slide- .piece on an armof onset thelevers and having a slot: ending a wider opening, a linkpivoted. on the other lever 'an d'having a slot alined with V the other:Slot, a jawmember on the link, havinga headed but ton extending throughthe slots, and a lockmg device-adapted to hold the lev'erslinany P 8.5hSl'tlOHfi-lll one of whichthezs'lot ofthelink registers with theopening off-the slide' piece av passage for the head: of the button.

6. A' tool of the character described cam prising crossed-levers, aspring to yieldingly, resist their operative'fmovement, a slidepiece onan arm of one of the 'levers and. having a. .slot ending in a wideropening, a link pivoted on the other lever and'having a slot alined withthe other slot, a jawmember on the link, having a headedbutton extendingthrough the slots, and a locking device adapted to hold the levers intwo adjustedpositions for the operation of the tool and in a thirdposition'in which the slot of the link registers with the opening of theslide-piece to provide a passage for the head of the button in theapplicatlon or removal of the jaw.

prising crossed levers, a spring to yieldingly resist their operativemovement, a jaw supported by an arm of one lever, lock-mechanism for thejaw, controlled by the levers, to release the same in a determinateadjusted position of the levers, and a locking'device, adapted foradjustment to determine said adjusted position of the levers.

. I 7. A tool of the character described com- 7 8. A; tool of thecharacter described com- 7 prising crossed levers, a spring toyieldingly resist their operative movement, a jaw supported by an arm ofone lever, lock-mechanism for the jaw controlled by the levers, to

release the same in a determinate adjusted position of the levers, and alocking device adapted for adjustment to hold the levers in an'ygof awhich the jaw is released.

9. A toolof the-character described com-- prising crossed levers, aspring to yi-eldingly resist their operative plurality of predeterminedpositions, inclusive of the adjusted position in movement,j'awsSupported on corresponding arms of the lever,

lock mechanism for the jaws controlled by 1 resist in adetermithelevers, to vrelease the same 7 levers, and a nate I adjustedpositionof the coking device adapted for adjustment to determine saidadjusted position of the levers. V

I '10. ,A tool of thezcharacter described coin prising crossedl-evers,'a spring to yieldingly their operative movement, a j avv sup-4ported by an arm of one lever, look-mechanism forthe javv controlled bythe levers," to determinate adjusted and a spring-con-o release the samein a position ,of the levers, trolled toothed bar pivoted on one leverand cooperating With the other lever to hold the levers in any ofaplurality ofpredeterinined ,positi'ons inclusive/of the adjustedposition in which the jaw is released:

A tool of the character descrihedcom prising crossed levers, a spring toyieldingly 'resist their operative movement, a jaw supported by an arrnof one lever, lock mechanisrn forthe j aw controlled by the leverstoHrelease the same in a s deterininate adjusted position of the levers;one of thelevers having aslot notcheclat one end, and aspring controlledlocking harpivotedon the other lever and projecting through release thesame in a ing a slot notched Ysition, and

the lever" at theopposite end of theslot whereby to hold theleversclosed together the slot, the

bar having at its free end a pin adapted to engage in the notchoftheslot, or to engage with the slotted lever outside the notch to holdthe levers in their controlled locking- .lever andfprojeoting throughthe slot, the

a'pin adapted to bar having at its free end engage in the notch oftheslot, orto engage ith the slotted lever to hold the levers in their saidadjusted Pothe her having teeth to engage against the resistance oftheirspring. V In testimony whereof I 'havehereunto afiixed mysignature,this-th day May,

I DAVID. CHARLES FEAT ER.

one of the levers hav-v outside the notchsaid adjusted posiion. 'o 1 12.A tool of the character described 'com- 1

